Posterior Compartment of Leg- Superficial Group

Question 0

Insertion of Gastrocnemius, Soleus, and Plantaris

Answer 0

Posterior surface of calcaneus via calcaneal tendon

Question 1

Origin of Gastrocnemius lateral head

and medial head

Answer 1

Lateral head: lateral aspect of lateral condyle of femur

Medial head: popliteal surface of femur, superior to medial condyle

Question 2

Innervation of Gastronemius, soleus, and plantaris

Answer 2

Tibial nerve (S1, S2)

Question 3

Action of Gastrocnemius

Answer 3

Plantarflexes ankle when knee is extended, raises heel during walking, and flexes knee joint

Question 4

Origin of Soleus

Answer 4

Posterior aspect of head of fibula, superior quarter of posterior surface of fibula, soleal line, and medial border of tibia

Question 5

Action of Soleus

Answer 5

Plantarflexes ankle, steadies leg on foot

Question 6

Origin of Plantaris

Answer 6

Inferior end of lateral supracondylar line of femur and oblique popliteal ligament

Question 7

Action of Plantaris

Answer 7

Weakly assists gastrocnemius in plantarflexing ankle; function probably mainly proprioceptive